US20090005681A1 - Ultrasound System And Method Of Forming Ultrasound Image - Google Patents
Ultrasound System And Method Of Forming Ultrasound Image Download PDFInfo
- Publication number
- US20090005681A1 US20090005681A1 US12/204,699 US20469908A US2009005681A1 US 20090005681 A1 US20090005681 A1 US 20090005681A1 US 20469908 A US20469908 A US 20469908A US 2009005681 A1 US2009005681 A1 US 2009005681A1
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- United States
- Prior art keywords
- image
- dimensional
- reflector
- signals
- velocity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000002604 ultrasonography Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 17
- 238000012545 processing Methods 0.000 claims abstract description 49
- 238000013507 mapping Methods 0.000 claims description 18
- 239000003086 colorant Substances 0.000 claims description 8
- 230000017531 blood circulation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000001934 delay Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000012285 ultrasound imaging Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
- G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
- G01S15/8993—Three dimensional imaging systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
- G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
- G01S15/8979—Combined Doppler and pulse-echo imaging systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52053—Display arrangements
- G01S7/52057—Cathode ray tube displays
- G01S7/52071—Multicolour displays; using colour coding; Optimising colour or information content in displays, e.g. parametric imaging
Definitions
- the present invention generally relates to ultrasound systems, and more particularly to an ultrasound system and a method of forming an ultrasound image.
- An ultrasound system has become an important and popular diagnostic tool due to its non-invasive and non-destructive nature.
- Modern high-performance ultrasound imaging diagnostic systems and techniques are commonly used to produce two- or three-dimensional images of internal features of patients.
- the ultrasound system may provide a color flow image, which shows blood flow information.
- the blood flow information may include information about a plurality of blood flow velocities at the target object.
- the velocities may be computed at the target object by using the Doppler effect.
- the color flow image is an image indicating the velocities with predetermined colors corresponding to the respective velocities.
- the color flow image not only provides real-time blood flow visualization but can also accurately delineate a wide range of blood flow conditions, ranging from high velocities in large vessels to minute trickles coursing through small vessels.
- the conventional ultrasound image may merely provide the color flow image showing velocity information at the target object without indicating velocity changes of the reflectors in the target object. Thus, it is difficult for a user to intuitively recognize the velocity change of the reflectors in the target object.
- FIG. 1 is a block diagram showing an illustrative embodiment of an ultrasound system.
- FIG. 2 is a schematic diagram illustrating an exemplary configuration of transducer elements and acoustic lens as well as further showing scan lines and a coordinates system.
- FIGS. 3 to 6 are exemplary diagrams showing illustrative embodiments of 3-dimensional images showing velocity changes in a target object.
- FIG. 7 is a schematic diagram showing an example of a display where a reference plane is set on a 3-dimensional image.
- FIG. 8 is a schematic diagram showing an example of a display where a 2-dimensional image is displayed together with a 3-dimensional image.
- FIG. 1 is a block diagram showing an illustrative embodiment of an ultrasound system.
- the ultrasound system 100 may include a transmit/receive unit 110 , an input unit 120 , a control unit 130 , a signal processing unit 140 , a storage unit 150 , an image processing unit 160 and display unit 170 .
- the transmit/receive unit 110 may include a probe (not shown) containing a plurality of transducer elements 112 for reciprocally converting the ultrasound signals and the electric signals.
- the probe may transmit ultrasound signals along a plurality of scan lines set in a target object and receive ultrasound echo signals reflected from the target object under the control of the control unit 130 .
- the transmit/receive unit 110 may further include a transmitter and a receiver.
- the transmitter may be operable to form a transmit pattern of transmit pulses, which are applied to transducer elements, such that the ultrasound signals generated from the transducer elements are focused on focal points on the scan lines.
- the receiver may be configured to perform receive focusing, i.e., apply delays to the receive signals in consideration of distances between the transducer elements and the focal points.
- the input unit 120 may allow the user to input instructions upon setup information.
- the setup information may include information about an image mode of the ultrasound system and information about a location and a size of a region of interest.
- the setup information may further include information for setting a reference plane.
- the input unit 120 may be any user interface unit such as a mouse, a keyboard, a track ball or the like.
- the control unit 130 may control the transmit/receive unit 110 of the ultrasound system. For example, as for an instruction about the image mode of the ultrasound system, the control unit 130 may be operable to control the transmit/receive unit 110 so that the transmit/receive unit 110 may obtain receive signals corresponding to the inputted image mode based on the ultrasound echo signals.
- the receive signals may be B-mode receive signals.
- the receive signals may be Doppler signals.
- the target object may include moving objects such as a blood flow or a heart.
- the transmit/receive unit 110 may obtain Doppler signals based on the ultrasound echo signals.
- the region of interest may include a color box.
- the control unit 130 may be further operable to control the signal processing unit 140 , the image processing unit 160 and the display unit 170 .
- the signal processing unit 140 may perform one of signal processing upon the receive signals. For example, if the receive signals are the B-mode receive signals, then the signal processing unit 140 may form 2-dimensional B-mode image signals. Also, the signal processing unit 140 may perform signal processing upon the Doppler signals to thereby form 3-dimensional color flow image signals.
- the 3-dimensional color flow image signals may be indicative of a plurality of reflector velocities at the target object. In one embodiment, the 3-dimensional color flow image signals may be further indicative of location information on the reflectors within the region of interest in axial and lateral directions (2-dimensional location).
- the B-mode image signals may be indicative of the 2-dimensional location of the reflectors and intensities of the ultrasound echo signals.
- the color flow image signals may be indicative of the 2-dimensional location of the reflectors and the reflector velocities within the region of interest.
- the storage unit 150 may store a first mapping table between colors and velocities, as well as a second mapping table between colors and intensities.
- the storage unit 150 may further store a third mapping table between velocities and intensities.
- the storage unit 150 may include any one of non-volatile storage devices such as a flash memory, a hard disk, a CD ROM and the like.
- the image processing unit 160 may be operable to form a 2-dimensional B-mode image based on the 2-dimensional B-mode image signals. Further, the image processing unit 160 may form a plurality of voxels V 0 to V m based on the color flow image signals, as shown in FIG. 3 . In order to form the voxels, the image processing unit 160 may be operable to obtain a plurality of reflector velocities based on the color flow image signals, and then set a reference velocity from the plurality of reflector velocities. In such a case, the reference velocity may be an average velocity, a minimum velocity or a maximum velocity of the plurality of reflector velocities.
- the voxels may be formed to indicate the reference velocities on a 3-dimensional space defined by the axial and lateral directions (A, L) and the reference velocity direction RS. Each of the voxels may be indicated with 3-dimensional location (A, L, RS). The voxels may be matched with the respective pixels at a slice within the region of interest set on the 2-dimensional B-mode image. Each of the voxels may have an arbitrary shape such as a cube.
- the image processing unit may be operable to refer to the first mapping table stored in the storage unit 150 to thereby indicate each of the voxels by a color corresponding to the reference velocity.
- each of the voxels may be represented by, for example, V 0 (A 0 , L 0 , RS 0 , C 0 ).
- a 0 may represent a location in an axial direction, to may represent a location in a lateral direction, RS 0 may represent a reference velocity and the C 0 may represent a color of the corresponding voxel.
- the image processing unit 160 may form a 3-dimensional color flow image 310 with the plurality of the voxels.
- the image processing unit 160 may be operable to form 3-dimensional image 320 on a 3-dimensional space defined by the axial and lateral directions (A, L) and a color direction C, as shown in FIG. 4 .
- the voxels may be formed to show colors corresponding to the reference velocities and indicated by 3-dimensional location (A, L, C).
- the image processing unit 160 may be operable to refer to the first mapping table stored in the storage unit 150 to thereby indicate each of the voxels with a color corresponding to the reference velocity.
- each of the voxels may be represented by, for example, V 0 (A 0 , L 0 , C 0 ).
- a 0 may represent a location in an axial direction
- L 0 may represent a location in a lateral direction
- C 0 may represent a color of the corresponding voxel.
- the image processing unit 160 may be operable to form the 3-dimensional color flow image 330 on a 3-dimensional space defined by the axial and lateral directions (A, L) and a current velocity direction S, as shown in FIG. 5 .
- the voxels may be formed to show colors corresponding to the current velocities of the reflectors and indicated with 3-dimensional location (A, L, S).
- the image processing unit 160 may be operable to refer to the first mapping table stored in the storage unit 150 to thereby indicate each of the voxels by a color corresponding to the current velocity S.
- each of the voxel may be represented by, for example, V 0 (A 0 , I 0 , S 0 , C 0 ).
- a 0 may represent a location in an axial direction
- L 0 may represent a location in a lateral direction
- S 0 may represent a current velocity
- C 0 may represent a color of the corresponding voxel.
- the image processing unit 160 may form the 3-dimensional color flow image 340 with bar graphs B 0 to B n on a 3-dimensional space defined by the axial and lateral directions (A, L) and a reference velocity RS, as shown in FIG. 6 .
- the bar graphs may be formed to indicate the reference velocities.
- Each of the graphs may be indicated with a color C corresponding to the reference velocity at each of the voxels.
- the height of each of the bar graphs may represent a reference velocity.
- the image processing unit 160 may be further operable to form a 3-dimensional color flow image on a 3-dimensional space defined by the axial and lateral directions (A, L) and intensity based on the first receive signals.
- the image processing unit 160 may be operable to set velocities corresponding to the intensities within the region of interest based on the B-mode image signals.
- the image processing unit 160 may be operable to retrieve the third mapping table stored in the storage unit 150 to set the velocities corresponding to the respective intensifies.
- the image processing unit 160 may be operable to form the 3-dimensional image constructed with a plurality of voxels, wherein each of the voxels is indicative of the intensity. Each of the voxels may be indicated with a color corresponding to the intensity of each of the voxels.
- the image processing unit 160 may be operable to perform a variety of image processing upon the 3-dimensional image.
- the image process may be operable to set a reference plane 410 in the 3-dimensional color flow image 310 based on the reference plane setting information inputted through the input unit 120 from the user, and then form a reference plane image corresponding to the reference plane 410 , as illustrated in FIG. 7 .
- a reference plane 410 in the 3-dimensional color flow image 310 based on the reference plane setting information inputted through the input unit 120 from the user, and then form a reference plane image corresponding to the reference plane 410 , as illustrated in FIG. 7 .
- the reference plane may be set on any 3-dimensional color flow image described in the above embodiments and the reference plane image corresponding to the reference plane may be formed.
- the image processing unit 160 may be operable to perform perspective projection or orthographic projection upon the 3-dimensional image to form a 3-dimensional projection image in accordance with one embodiment of the present invention.
- the image processing unit 160 may be operable to perform image processing to display a predetermined number of 3-dimensional color flow images for a preset time through the display unit 170 in real time. For example, a display of the 3-dimensional color flow image will be described by referring to FIG. 9 .
- the image processing unit 160 may receive color flow image signals from the signal processing unit 140 at step S 903 .
- n represents the number of displaying 3-dimensional color flow images.
- the image processing unit 160 may form a 1 st 3-dimensional color flow image IM 1 based on the 3-dimensional color flow image signals at step S 905 .
- the formed 3-dimensional image IM 1 is displayed through the display unit 170 at step S 907 .
- a predetermined number e.g., 5
- the image processing unit 160 may remove (n ⁇ N+1)th 3-dimensional color flow image from the displayed 3-dimensional color flow images at step S 913 and then the process goes to the step S 915 .
- the previously formed 3-dimensional color flow images may be displayed with relatively lower brightness than the currently formed 3-dimensional color flow images by applying a predetermined weight.
- the image processing unit 160 may apply a first weight (e.g., 0.8) to the 3-dimensional color flow image IM 1 .
- the image processing unit 160 may apply a second weight (e.g., 0.6) to the 3-dimensional color flow image IM 1 and the second weight to the 3-dimensional color flow image IM 2 .
- the above process may be repeatedly carried out until the instruction for stopping displaying the 3-dimensional color flow images.
- the number of displaying the 3-dimensional images is certainly not limited thereto. It should be understood that the number of the 3-dimensional images to be simultaneously displayed and the weight may be changed according to the necessity by those skilled in the art.
- the display unit 170 may display the 2-dimensional image, the 3-dimensional color flow image and the reference plane image.
- the display unit 170 may be operable to display only the 3-dimensional color flow image.
- the display unit 170 may display the 2-dimensional image together with the 2-dimensional image.
- the display unit 170 may be operable to display the 2-dimensional image, the 3-dimensional color image and the reference plane image at the same time.
- the user may intuitively recognize the velocity changes in the target object.
- an ultrasound system comprising: a transmit/receive unit operable to transmit ultrasound signals toward a target object having reflectors along scan lines and receive ultrasound echo signals reflected from the target object to form receive signals based on the ultrasound echo signals; a signal processing unit operable to form image signals based on the receive signals, the image signals being indicative of locations and velocities of the reflectors in the target object; and an image processing unit operable to form a 3-dimensional image 3-dimensionally indicating the velocities of the reflectors based on the image signals.
- a method of forming an ultrasound image comprising: a) transmitting ultrasound signals along scan lines set in a target object having reflectors and receiving ultrasound echo signals reflected from the target object to form receive signals based on the ultrasound echo signals; b) forming image signals based on the receive signals, the image signals being indicative of locations and velocities of the reflectors in the target object; and c) forming a 3-dimensional image 3-dimensionally indicating reflector velocities based on the image signals.
- any reference in this specification to “one embodiment,” “an embodiment,” “example embodiment,” etc. means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention.
- the appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
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- Heart & Thoracic Surgery (AREA)
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2007-0089243 | 2007-04-09 | ||
KR1020070089243A KR101055588B1 (ko) | 2007-09-04 | 2007-09-04 | 초음파 영상을 형성하는 초음파 시스템 및 방법 |
Publications (1)
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US20090005681A1 true US20090005681A1 (en) | 2009-01-01 |
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Family Applications (1)
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US12/204,699 Abandoned US20090005681A1 (en) | 2007-04-09 | 2008-09-04 | Ultrasound System And Method Of Forming Ultrasound Image |
Country Status (4)
Country | Link |
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US (1) | US20090005681A1 (ko) |
EP (1) | EP2034333A3 (ko) |
JP (1) | JP2009061275A (ko) |
KR (1) | KR101055588B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120120068A1 (en) * | 2010-11-16 | 2012-05-17 | Panasonic Corporation | Display device and display method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2511878B1 (en) * | 2011-04-12 | 2020-05-06 | Samsung Medison Co., Ltd. | Providing three-dimensional ultrasound image based on three-dimensional color reference table in ultrasound system |
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US5105817A (en) * | 1988-06-08 | 1992-04-21 | Kabushiki Kaisha Toshiba | Ultrasonic bloodstream imaging apparatus |
US5505204A (en) * | 1993-05-13 | 1996-04-09 | University Hospital (London) Development Corporation | Ultrasonic blood volume flow rate meter |
US5669387A (en) * | 1992-10-02 | 1997-09-23 | Kabushiki Kaisha Toshiba | Ultrasonic diagnosis apparatus and image displaying system |
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US5895358A (en) * | 1997-05-07 | 1999-04-20 | General Electric Company | Method and apparatus for mapping color flow velocity data into display intensities |
US6334847B1 (en) * | 1996-11-29 | 2002-01-01 | Life Imaging Systems Inc. | Enhanced image processing for a three-dimensional imaging system |
US20030114756A1 (en) * | 2001-12-18 | 2003-06-19 | Xiang-Ning Li | Method and system for ultrasound blood flow imaging and volume flow calculations |
US20070038105A1 (en) * | 2005-06-28 | 2007-02-15 | Medison Co., Ltd. | Apparatus and method for forming an ultrasound image in an ultrasound diagnostic system |
US20080091106A1 (en) * | 2006-10-17 | 2008-04-17 | Medison Co., Ltd. | Ultrasound system for fusing an ultrasound image and an external medical image |
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US20090062653A1 (en) * | 2007-09-04 | 2009-03-05 | Dong Gyu Hyun | Ultrasound System And Method Of Forming Ultrasound Image |
US7682311B2 (en) * | 2005-09-22 | 2010-03-23 | Siemens Medical Solutions Usa, Inc. | Phase unwrapped velocity display for ultrasound medical imaging |
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JPS6391783A (ja) * | 1986-10-03 | 1988-04-22 | カワン スタント | 画像信号のスム−ジング処理方法 |
JP3248001B2 (ja) * | 1992-03-19 | 2002-01-21 | 株式会社日立メディコ | 三次元カラードプラ画像表示方法及びその装置 |
JPH0938085A (ja) * | 1995-08-03 | 1997-02-10 | Hitachi Ltd | 超音波流速計測装置 |
JP3946815B2 (ja) | 1997-06-11 | 2007-07-18 | 東芝医用システムエンジニアリング株式会社 | 超音波診断装置 |
WO2004072676A1 (en) * | 2003-02-13 | 2004-08-26 | Koninklijke Philips Electronics N.V. | Flow spectrograms synthesized from ultrasonic flow color doppler information |
-
2007
- 2007-09-04 KR KR1020070089243A patent/KR101055588B1/ko active IP Right Grant
-
2008
- 2008-09-03 EP EP08015530A patent/EP2034333A3/en not_active Withdrawn
- 2008-09-04 US US12/204,699 patent/US20090005681A1/en not_active Abandoned
- 2008-09-04 JP JP2008227566A patent/JP2009061275A/ja active Pending
Patent Citations (12)
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US5105817A (en) * | 1988-06-08 | 1992-04-21 | Kabushiki Kaisha Toshiba | Ultrasonic bloodstream imaging apparatus |
US5669387A (en) * | 1992-10-02 | 1997-09-23 | Kabushiki Kaisha Toshiba | Ultrasonic diagnosis apparatus and image displaying system |
US5505204A (en) * | 1993-05-13 | 1996-04-09 | University Hospital (London) Development Corporation | Ultrasonic blood volume flow rate meter |
US5701898A (en) * | 1994-09-02 | 1997-12-30 | The United States Of America As Represented By The Department Of Health And Human Services | Method and system for Doppler ultrasound measurement of blood flow |
US6334847B1 (en) * | 1996-11-29 | 2002-01-01 | Life Imaging Systems Inc. | Enhanced image processing for a three-dimensional imaging system |
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US20070038105A1 (en) * | 2005-06-28 | 2007-02-15 | Medison Co., Ltd. | Apparatus and method for forming an ultrasound image in an ultrasound diagnostic system |
US7682311B2 (en) * | 2005-09-22 | 2010-03-23 | Siemens Medical Solutions Usa, Inc. | Phase unwrapped velocity display for ultrasound medical imaging |
US20080091106A1 (en) * | 2006-10-17 | 2008-04-17 | Medison Co., Ltd. | Ultrasound system for fusing an ultrasound image and an external medical image |
US20080194966A1 (en) * | 2007-02-14 | 2008-08-14 | Medison Co., Ltd. | Ultrasound system |
US20090062653A1 (en) * | 2007-09-04 | 2009-03-05 | Dong Gyu Hyun | Ultrasound System And Method Of Forming Ultrasound Image |
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Publication number | Priority date | Publication date | Assignee | Title |
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US20120120068A1 (en) * | 2010-11-16 | 2012-05-17 | Panasonic Corporation | Display device and display method |
Also Published As
Publication number | Publication date |
---|---|
KR101055588B1 (ko) | 2011-08-23 |
EP2034333A3 (en) | 2009-08-19 |
EP2034333A2 (en) | 2009-03-11 |
KR20090024319A (ko) | 2009-03-09 |
JP2009061275A (ja) | 2009-03-26 |
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